Topic 8 - Descriptive Statistics

Given a person with a z score of 0 on a norm-referenced assessment, what can we conclude regarding her performance? Compared to the norm group, the person performed (below/mean/above) the average.

Mean

If there are extreme scores in a data set, what is the most appropriate measure of central tendency to indicate the most typical score?

Median

The measure of central tendency that represents the most frequently occurring score is the

Mode

The measure that represents the difference between the highest and lowest score is the

Range

Francis wants to present the average mathematics score attained by the participants in her study. She needs to report a measure of

central tendency.

Standard deviation (is/is not) a measure of central tendency.

is NOT

The mean (is/is not) a measure of variability.

is NOT

The measure of central tendency that represents the midpoint of the scores in a distribution is the

median

Measures of relative position include

percentile ranks.

A standard score is a measure of

relative position.

The z score is an example of a _______ score.

standard

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the range is:

7

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the mean is:

8

The range of the following distribution 1,2,4,4,5,5,5,6,6,8,9 is:

8

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the mode is:

6

In a distribution with a mean of 28 and a standard deviation of 2 almost all the scores fall between

22-34

The median of the following distribution 1,2,4,4,5,5,5,6,6,8,9 is:

5

The mode of the following distribution is 1,2,4,4,5,5,5,6,6,8,9 is:

5